Miner&#39;s lamp.



PATENTED JAN. 13, 1903.

J. JAGOBSEN. M INERS LAMP. APPLICATION FILED NOV. 25, 1901.

N0 MODEL.

JITORJKE' T.

NITED I STATES PATENT OFFICE.

JOHN JACOBSEN, OF LETHBRIDGE, CANADA, ASSIGNOR OF ONE-HALF TO GUSTAF A.NOBDQUIST, OF GREATFALLS, MQNTANA.

MINERS LAMP.

SPECIFICATION formingpart of Letters Patent No. 718,128, dated J anuary13, 1903.

Application filed November 25,1901. Serial No. 83,563. (No model.)

To all whom it may concern:

Be it known that 1, JOHN JACOBSEN, asubject of the King of Denmark,residing at Lethbridge, in the southern district of Alberta,

Canada, have invented certain new and use-.

ful Improvements in Miners Lamps; and I do declare the following to be afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame, reference being had to the accompanying drawings, and to thefigures of reference marked thereon, which form a part of thisspecification.

My invention relates to improvements in lamps of the class used byminers who secure a lamp to their cap, from whence it spreads light upontheir underground work in mines; and the objects of the invention are toprovide means by which the lamp may be secured to the cap in a balancedsuspended manner, so that it will preserve its plumb position whetherthe miner stands erect or stoops more or less down and to make such lampeasily removable from the cap and adapted to hang on a hook or peg.These objects I attain by the novel construction and arrangement ofparts illustrated in the accompanying drawings, in which- Figure 1 is aside view of a lamp suspended with my device from the cap of a humanfigure representing a miner. Fig. 2 shows a sheet-metal blank from whichthe lampholder is formed. Fig. 3 is a modification showing Fig. 2 madeout of wire.

Referring to the drawings by reference-numerals, 4 designates the headof a miner, on which 5 is the usual miners cap with a considerably largevizor 6, to which and to the cap is secured at 7 by stitches or othersuitable means the bracket or lamp-holder 8, which is provided in itstwo cheek-pieces 9 with notches 10, in which the trunnions 11, providedat both sides of the upper part of the lamp 12, rest and permit the lampto swing back and forth between the cheek-pieces. At each side of thebracket is pivoted and friction-held 011 a pivot 13 a hook 14, whichtakes above each trunnion 11, and thus keeps it in place until it isdesired to remove the lamp. Then the hook may be swung away into theposition shown in dotted line 15.

16 is the wick, and 17 is the cover of the lamp, while 18 is a hook bywhich to hold and suspend the lamp when not in the bracket 8. When thelamp swings much backward with its top end, the hook 18 passes into theclearing 19 (see Fig. 2,) or between the upper parts of the wire at 20in Fig. 3, if the bracket is made of wire as illustrated in said Fig. 3,that it may be; and when it is made of wire the hooks 14 may be omitted,as the trunnions are then kept in their journals by the narrow points 21of the gaps 10, which are sprung wider only while the trunnions areforced up or down through them.

In the ordinary miners lamp heretofore used a hook similar to hook-18 isrigidly secured to the cap, so that the lamp tilts with the stooping ofthe miner, and thus causes the oil sometimes to press forward to theflame and at other times to recede from it with an undesirable variationin the light. Besides that such lamps are usually secured so close tothe cap that the vizor throws too much shadow on the work near in frontof the miner, all of which difficulties my device aims to overcome andremedy.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is

1. In a miners lamp, the combination with a plate or bracket having anupper rearwardly-curved top securable to the cap and a forwardly-curvedbottom end securable upon the vizor of the cap, and intermediate itsends forwardly projecting cheek plates having downwardly and forwardlyslanting notches, of a lamp having side trunnions adapted to rest insaid notches; and the friction-held hooks 14 closing the notches toprevent accidental displacement of the trunnions.

2. In a miners lamp, the combination with a plate or bracket having anupper rearwardly-curved top securable to the cap and a forwardly-curvedbottom end securable upon the vizor of the cap, and intermediate itsends forwardly projecting cheek plates having said hook in the bracket,substantially as and I0 downwardly and forwardly slanting notches, forthe purpose set forth. of a lamp having side trunnions adapted to Intestimony whereof I affix my signature rest in said notches; and thefriction-held in presence of two witnesses. 5 hooks 14 closing thenotches to revent acoi- 1 dentaldisplacement of the trunn i ons; and theJOHN JACOBSEN' combined hook and handle 18, fixed to the Witnesses: rearof the upper part of the lamp and pro- T. G. STOCKTON, jecting above thesame, and a clearing for 1 JOHN E. T. MCKNIGHT.

